这种结构的雪花大约在华氏28度下形成，而柱状和针状的在接近23度下出现。

Shapes like these form around 28 degrees Fahrenheit, while columns and slender needles appear near 23 degrees.

youdao

这种结构的雪花大约在华氏28度下形成，而柱状和针状的在接近23度下出现。

Shapes like these form around 28 degrees Fahrenheit, while columns and slender needles appear near 23 degrees.

youdao